Biomedical autism therapy and interventions such as the Gluten and Casein-Free diet, Methyl-B12 therapy, supplement support, etc. can have tremendous benefits for individuals on the autism-spectrum. Many of these benefits have to do with improved attention and focusing, increased language skills and understanding, increased environmental awareness, as well as socialization skills. However, sometimes when these positive gains are being seen unexpected changes also begin to emerge - particularly with smaller children
Here are a few things to consider if you are doing biomedical intervention with your child, are seeing some positive changes as described above, but are also seeing some bad and naughty behavior as well.
This is a fairly common scenario - particularly with smaller children. Not all behavior is an indicator of trouble or problems - even though naughty behavior (deliberating mis-behaving, not listening to directions, hitting, screaming, and acting out) can be quite troubling and stressful to deal with.
When you are seeing positive gains with your child - better eye contact, more awareness of their environment, social interaction, etc. - you may also see more willfulness with your child as well. Many kids as they begin to emerge from their cognitive limitations develop many typical behaviors of other children their similar age.
Some kids who emerge from their autism limitations will begin to go through the various stages of behavior issues - in this example, a 5 or 6 year old now exhibiting 3 year year old behaviors. Their body and mental/emotional condition needs to time to catch up.
Trying to recognize what is autism behavior and what is typical childhood behavior can be a challenge. However, remember that a willful child will normally push the envelope - whether they are on the autism-spectrum or not, and an child with autism who has not been extremely willful in the past may become more so as they begin to heal and gain a better understanding of the world around them.